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Variable: cieLabToRGB

const cieLabToRGB: object

Defined in: color/cielab.ts:52

A shader module that converts CIE L*a*b* input (RGB channels read as L, a, b on a D65 white point) to sRGB. For TIFFs with PhotometricInterpretation = 8 (CIELab).

Type Declaration​

inject​

readonly inject: object

inject.fs:#decl​

readonly fs:#decl: "\n const vec3 D65 = vec3(\n 0.95047, // Xn\n 1.00000, // Yn\n 1.08883 // Zn\n );\n\n vec3 cielabToRgb(vec3 labTex) {\n // labTex in [0,1] from RGB8 texture\n float L = labTex.r * 255.0;\n float a = (labTex.g - 0.5) * 255.0;\n float b = (labTex.b - 0.5) * 255.0;\n\n float y = (L + 16.0) / 116.0;\n float x = (a / 500.0) + y;\n float z = y - (b / 200.0);\n\n vec3 xyz;\n vec3 v = vec3(x, y, z);\n vec3 v3 = v * v * v;\n\n xyz = D65 * mix(\n (v - 16.0 / 116.0) / 7.787,\n v3,\n step(0.008856, v3)\n );\n\n vec3 rgb = mat3(\n 3.2406, -1.5372, -0.4986,\n -0.9689, 1.8758, 0.0415,\n 0.0557, -0.2040, 1.0570\n ) * xyz;\n\n // sRGB gamma\n rgb = mix(\n 12.92 * rgb,\n 1.055 * pow(rgb, vec3(1.0 / 2.4)) - 0.055,\n step(0.0031308, rgb)\n );\n\n return clamp(rgb, 0.0, 1.0);\n }\n" = shader

inject.fs:DECKGL_FILTER_COLOR​

readonly fs:DECKGL_FILTER_COLOR: "\n color.rgb = cielabToRgb(color);\n "

name​

readonly name: "cielab-to-rgb" = "cielab-to-rgb"